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- Synthesis and Electromagnetic Wave Absorbing Property of BaTiO3@Fe Nanofibers with Core-Shell Structure
- Young-In Lee, Dae-Hwan Jang, Ki-Hoon Sung, Kyuman Lee, Yong-Ho Choa
- J Korean Powder Metall Inst. 2016;23(1):38-42. Published online February 1, 2016
- DOI: https://doi.org/10.4150/KPMI.2016.23.1.38
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- 4 Citations
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Abstract
PDF BaTiO3-coated Fe nanofibers are synthesized via a three-step process. α-Fe2O3 nanofibers with an average diameter of approximately 200 nm are first prepared using an electrospinning process followed by a calcination step. The BaTiO3 coating layer on the nanofiber is formed by a sol-gel process, and a thermal reduction process is then applied to the core-shell nanofiber to selectively reduce the α-Fe2O3 to Fe. The thickness of the BaTiO3 shell is controlled by varying the reaction time. To evaluate the electromagnetic (EM) wave-absorbing abilities of the BaTiO3@Fe nanofiber, epoxy-based composites containing the nanofibers are fabricated. The composites show excellent EM wave absorption properties where the power loss increases to the high frequency region without any degradation. Our results demonstrate that the BaTiO3@Fe nanofibers obtained in this work are attractive candidates for electromagnetic wave absorption applications.
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Citations
Citations to this article as recorded by
- Research on Electromagnetic Wave Absorption Based on Electrospinning Technology†
Baoding Li, Jing Qiao, Yue Liu, Haoyuan Tian, Wei Liu, Qilei Wu, Zhou Wang, Jiurong Liu, Zhihui Zeng
Chinese Journal of Chemistry.2024; 42(7): 777. CrossRef - Design, synthesis, and characterization of a porous ceramic-supported CeO2 nanocatalyst for CO -free H2 evolution
Jimin Lee, Minseob Lim, Tae Sung Kim, Kee-Ryung Park, Jong-Sik Lee, Hong-Baek Cho, Joo Hyun Park, Yong-Ho Choa
Applied Surface Science.2021; 548: 149198. CrossRef - Electromagnetic wave absorption properties of Fe/MgO composites synthesized by a simple ultrasonic spray pyrolysis method
Hyo-Ryoung Lim, Seung-Jae Jung, Tae-Yeon Hwang, Jimin Lee, Ki Hyeon Kim, Hong-baek Cho, Yong-Ho Choa
Applied Surface Science.2019; 473: 1009. CrossRef - Study on the Optimization of Reduction Conditions for Samarium-Cobalt Nanofiber Preparation
Jimin Lee, Jongryoul Kim, Yong-Ho Choa
Journal of Korean Powder Metallurgy Institute.2019; 26(4): 334. CrossRef
- Research on Electromagnetic Wave Absorption Based on Electrospinning Technology†
- [Korean]
- Microstructure and Mechanical Properties of Al2O3/Fe-Ni Nanocomposite Prepared by Rapid Sintering
- Young-In Lee, Kun-Jae Lee, Dae-Hwan Jang, Jae-Kyo Yang, Yong-Ho Cho
- J Korean Powder Metall Inst. 2010;17(3):203-208.
- DOI: https://doi.org/10.4150/KPMI.2010.17.3.203
- 187 View
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Abstract
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- A new High Frequency Induction Heating (HFIH) process has been developed to fabricate dense Al_2O_3 reinforced with Fe-Ni magnetic metal dispersion particles. The process is based on the reduction of metal oxide particles immediately prior to sintering. The synthesized Al_2O_3/Fe-Ni nanocomposite powders were formed directly from the selective reduction of metal oxide powders, such as NiO and Fe_2O_3. Dense Al_2O_3/Fe-Ni nanocomposite was fabricated using the HFIH method with an extremely high heating rate of 2000°C/min. Phase identification and microstructure of nanocomposite powders and sintered specimens were determined by X-ray diffraction and SEM and TEM, respectively. Vickers hardness experiment were performed to investigate the mechanical properties of the Al_2O_3/Fe-Ni nanocomposite.
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